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Hafnium acetylacetonate, also known as Hf4, is a coordination compound with formula Hf4. This white solid is the main hafnium complex of acetylacetonate. The complex has a square antiprismatic geometry with eight nearly equivalent Hf-O bonds. The molecular symmetry is D2, i.e., the complex is chiral. It is prepared from hafnium tetrachloride and acetylacetone, and base. Zr4 is very similar in structure and properties.
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